SarayahN740304 SarayahN740304
  • 03-11-2022
  • Mathematics
contestada

x^2-18x-57=6 solve each equation by completing the square

Respuesta :

MeridithO590729 MeridithO590729
  • 03-11-2022
[tex]x^2-18x-57=6[/tex][tex]x^2-18x+81-81-57=6[/tex][tex](x^2-18x+81)-81-57=6[/tex][tex](x-9)^2=6+57+81[/tex][tex](x-9)^2=144[/tex][tex]\sqrt[]{(x-9)^2}=\sqrt[]{144}[/tex][tex]x-9=\pm12[/tex][tex]x=12+9=21[/tex][tex]x=-12+9=-3[/tex]

x=-3

x=21

Answer Link

Otras preguntas

help me pleaseeeeeeeeeeeee chem question
1. What is the measure of angle x?
To control economic challenges, such as inflation, governments use .
what is como mean in spanish
What is the attractive force between two of the same kind of particle?
Read the lines from the story: "... and shook him until his teeth rattled."What literary device is present in the passage? metaphoralliterationsimilieimagery​
Mr. Presley, a history teacher, learns that students from some ethnic groups behave in ways that may make some educational tasks more difficult than others. In
1 pointIf the library charges $0.25 each day for overdue books, how much wouldTiana have to pay on a book that she found under her bed and is now 17days overdue
Which of these statements correctly describes covalent bonds
What is the slope of the line x = -1? Choose 1 answer: -1 1 0 Undefined